1 February 2017 W ion implantation boosting visible-light photoelectrochemical water splitting over ZnO nanorod arrays
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Abstract
W ions were doped into ZnO nanorod arrays hydrothermally grown on the F-doped tin-oxide-coated glass substrates via an advanced ion implantation technique for photoelectrochemical (PEC) water splitting under visible light. It was found that W incorporation could narrow the bandgap of ZnO and shift the optical absorption into visible light regions obviously, with the one-dimensional nanorod structure maintained for superior charge transfer. As a result, the W-doped ZnO nanorod arrays exhibit considerable PEC performance relative to ZnO nanorod arrays under visible light illumination ( λ > 420    nm ), with photocurrent density achieved up to 15.2    μ A / cm 2 at 1.0 V (versus Ag/AgCl). The obtained PEC properties indicate that ion implantation can be an alternative approach to develop unique materials for efficient solar energy conversion.
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
Li Cai, Li Cai, Wu Zhou, Wu Zhou, Feng Ren, Feng Ren, Jie Chen, Jie Chen, Guangxu Cai, Guangxu Cai, Yichao Liu, Yichao Liu, Xiangjiu Guan, Xiangjiu Guan, Shaohua Shen, Shaohua Shen, } "W ion implantation boosting visible-light photoelectrochemical water splitting over ZnO nanorod arrays," Journal of Photonics for Energy 7(1), 016501 (1 February 2017). https://doi.org/10.1117/1.JPE.7.016501 . Submission: Received: 30 November 2016; Accepted: 16 January 2017
Received: 30 November 2016; Accepted: 16 January 2017; Published: 1 February 2017
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